Chemistry Letters p. 425 - 428 (1984)
Update date:2022-08-11
Topics:
Elguero, J.
Navarro, P.
Franco, M. I. Rodriguez
A new series of macrocyclic polyether - diester compounds containing one or two pyrazole rings (NH or N-methyl substituted) have been prepared by treating 3,5-pyrazolyldicarbonyl chlorides with tetraethylene glycol in the presence of triethylamine.Their complexation abilities towards the shift reagent Eu(Fod)3 have been studied by 1H NMR in CDCl3 solution.
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